The world's largest, and most controversial arms fair opened its doors in London today, showcasing the latest defence technology.
The threat of U.S military action in Syria hangs heavy over this year's event, with protesters saying London has a moral duty not to host the exhibition. From there our Political Correspondent Simon Harris reports.
More top news
Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.
The family of Oliver Dearlove urged people to "think again" before using their fists, as the man who killed him began a six-year jail term.
London Fire Brigade took Southwark Council to court on four charges in relation to safety breaches at Lakanal House in Camberwell.